KaiserMotion ZF8 Billet CNC D Drum Audi S4/S5 B9/9.5
SKU: ktu-zf8-65
ZF8 billet CNC D drum for Audi S4/S5 B9/9.5 replaces the weak OE cast D clutch hub at the center of a dependable transmission rebuild.
The KaiserMotion ZF8 Billet CNC D Drum is engineered for Audi S4 and S5 B9/9.5 applications using the ZF 8HP transmission family. It directly addresses the OE D-clutch hub’s weak point: a cast A380 aluminum construction that can allow the steel clutch-plate cores to wear into the hub splines. Once spline wear begins, the damage can escalate quickly, often accompanied by burnt clutches. OE backing-plate flex can also contribute to uneven friction-material wear, creating the conditions for an early and costly transmission failure. Machined from billet material with CNC precision, this D drum is a purpose-built upgrade for transmission builders and enthusiasts replacing the failure-prone OE D-clutch hub. It is an essential consideration when rebuilding a ZF8 unit affected by D-clutch wear, loss of 4th through 8th gears, or Reverse.